RJ45 8P8C coupler keystone insert module. Use this feed-through in wall plates and patch panels for voice/data applications. It provides full range of solutions for voice, home networking, home office, audio/video and more. With the wide selection of snap-in modules, you can custom-configure your keystone wall plates and patch panels for greater control and more flexibility. Easy to use, just snap it into patch panels, compatible wall plates and surface boxes.